// JavaScript Document
//javascript moves through html where oversrc attribute is, and inserts onmouseover events

var flag_last_selected = null;

function SimpleSwapOnclick(el,which) {
  el.src=el.getAttribute(which || "origsrc");
}

function SimpleSwapOnclickSetupOnclick() {
  var x = document.getElementsByTagName("img");
  for (var i=0;i<x.length;i++){
    var oversrc = x[i].getAttribute("oversrc");
	var sel_image = x[i].getAttribute("select_image");
	
    if (!oversrc) continue;
      
    // preload image -
    // comment the next two lines to disable image pre-loading
    x[i].oversrc_img = new Image();
    x[i].oversrc_img.src=oversrc;
	
	x[i].swap_large_img = new Image();
    x[i].swap_large_img.src=sel_image;

    // set event handlers
    x[i].onmouseover = new Function("SimpleSwapOnclick(this,'oversrc');");
    x[i].onmouseout = new Function("SimpleSwapOnclick(this);");

    // save original src
    x[i].setAttribute("origsrc",x[i].src);
  }
}


//this stops the image swap and sets the value of the hidden form input
function StopSwap(el){
	el.onmouseout = new Function();
	if(flag_last_selected != null && flag_last_selected != el){
		flag_last_selected.onmouseout = new Function("SimpleSwapOnclick(this);");
		flag_last_selected.src = flag_last_selected.getAttribute("origsrc");
	}	
	flag_last_selected = el;
	// this will change other values
	document.getElementById("select_disc").innerHTML = el.getAttribute("select_disc");
	document.getElementById("select_image").src = el.getAttribute("select_image");
	document.getElementById("select_heading").innerHTML = el.getAttribute("select_heading");
	document.getElementById("select_date").innerHTML = el.getAttribute("select_date");
	document.getElementById("select_link").href = el.getAttribute("select_link");
}